docs(setup_lib.sh): add comment for context

diff --git a/build/local/setup_lib.sh b/build/local/setup_lib.sh
index 6f532a39831933e717a42d0aebe440e344ee3e44..c037a260fcd04be565a4728068396bbdefc108cb 100755 (executable)
--- a/build/local/setup_lib.sh
+++ b/build/local/setup_lib.sh
@@ -1,6 +1,7 @@
 #!/bin/bash
 
 # Exit when any command fails
+# We need to stop build if pip fails
 set -e
 
 for module in `ls /srv/lib/`; do